1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * i2c driver for hmc5843/5843/5883/5883l/5983 4 * 5 * Split from hmc5843.c 6 * Copyright (C) Josef Gajdusek <atx@atx.name> 7 */ 8 9 #include <linux/module.h> 10 #include <linux/i2c.h> 11 #include <linux/regmap.h> 12 #include <linux/iio/iio.h> 13 #include <linux/iio/triggered_buffer.h> 14 15 #include "hmc5843.h" 16 17 static const struct regmap_range hmc5843_readable_ranges[] = { 18 regmap_reg_range(0, HMC5843_ID_END), 19 }; 20 21 static const struct regmap_access_table hmc5843_readable_table = { 22 .yes_ranges = hmc5843_readable_ranges, 23 .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges), 24 }; 25 26 static const struct regmap_range hmc5843_writable_ranges[] = { 27 regmap_reg_range(0, HMC5843_MODE_REG), 28 }; 29 30 static const struct regmap_access_table hmc5843_writable_table = { 31 .yes_ranges = hmc5843_writable_ranges, 32 .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges), 33 }; 34 35 static const struct regmap_range hmc5843_volatile_ranges[] = { 36 regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG), 37 }; 38 39 static const struct regmap_access_table hmc5843_volatile_table = { 40 .yes_ranges = hmc5843_volatile_ranges, 41 .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges), 42 }; 43 44 static const struct regmap_config hmc5843_i2c_regmap_config = { 45 .reg_bits = 8, 46 .val_bits = 8, 47 48 .rd_table = &hmc5843_readable_table, 49 .wr_table = &hmc5843_writable_table, 50 .volatile_table = &hmc5843_volatile_table, 51 52 .cache_type = REGCACHE_RBTREE, 53 }; 54 55 static int hmc5843_i2c_probe(struct i2c_client *cli, 56 const struct i2c_device_id *id) 57 { 58 struct regmap *regmap = devm_regmap_init_i2c(cli, 59 &hmc5843_i2c_regmap_config); 60 if (IS_ERR(regmap)) 61 return PTR_ERR(regmap); 62 63 return hmc5843_common_probe(&cli->dev, 64 regmap, 65 id->driver_data, id->name); 66 } 67 68 static int hmc5843_i2c_remove(struct i2c_client *client) 69 { 70 return hmc5843_common_remove(&client->dev); 71 } 72 73 static const struct i2c_device_id hmc5843_id[] = { 74 { "hmc5843", HMC5843_ID }, 75 { "hmc5883", HMC5883_ID }, 76 { "hmc5883l", HMC5883L_ID }, 77 { "hmc5983", HMC5983_ID }, 78 { } 79 }; 80 MODULE_DEVICE_TABLE(i2c, hmc5843_id); 81 82 static const struct of_device_id hmc5843_of_match[] = { 83 { .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID }, 84 { .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID }, 85 { .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID }, 86 { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID }, 87 {} 88 }; 89 MODULE_DEVICE_TABLE(of, hmc5843_of_match); 90 91 static struct i2c_driver hmc5843_driver = { 92 .driver = { 93 .name = "hmc5843", 94 .pm = HMC5843_PM_OPS, 95 .of_match_table = hmc5843_of_match, 96 }, 97 .id_table = hmc5843_id, 98 .probe = hmc5843_i2c_probe, 99 .remove = hmc5843_i2c_remove, 100 }; 101 module_i2c_driver(hmc5843_driver); 102 103 MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>"); 104 MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver"); 105 MODULE_LICENSE("GPL"); 106